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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > JB3 + lag going into 4th gear



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      11-11-2009, 09:08 AM   #1
jcarlucci1
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JB3 + lag going into 4th gear

Is anyone still getting a hesitation shifting into 4th with the new JB3 maps? My car just DIES as I shift into 4th at high rpm's..
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      11-11-2009, 09:10 AM   #2
Mike@N54Tuning.com
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Quote:
Originally Posted by jcarlucci1 View Post
Is anyone still getting a hesitation shifting into 4th with the new JB3 maps? My car just DIES as I shift into 4th at high rpm's..
What software version of the JB3 are you running? I assume you are a MT car?

Mike
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      11-11-2009, 09:30 AM   #3
jcarlucci1
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MT, running newest 8.5
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      11-11-2009, 11:05 AM   #4
Mike@N54Tuning.com
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Originally Posted by jcarlucci1 View Post
MT, running newest 8.5
No problems here going in to 4th with my MT with map 7, but there could be something else going on like knock retard or a solenoid/wastegate problem. Do some BT logs and test it on lower maps and then send them over to me or BMS for help.

Mike
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      11-11-2009, 11:09 AM   #5
ianthegreat
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Sounds like bog to me. Mine always happened during the 3rd to 4th shift WOT. I don't have that problem w/ 1.4 though. Was previously 1.3.
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      11-11-2009, 11:32 AM   #6
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slow your shift a little or shift at 6500 and the bog wont be there.
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